Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-04-16

KC @ DET

Home plate: Andy Fletcher

The grade leaned — the ledger says which way.

B-
Umpire Grade
91.9% accurate
1.0
Run Favor
runs, DET
3
ABS Overturns
of 4 reviewed

What this shows — how Andy Fletcher called the 160 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 147 right. Below, only his misses are plotted, alongside every pitch the ABS (Automated Ball-Strike System) reviewed on a challenge.

The zone, as he called it

Challenge 1: Kevin McGonigle — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).1Challenge 2: Carter Jensen — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).2Challenge 3: Michael Massey — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Kevin McGonigle — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).4
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.691 · 3-2 strike called ball
    Gleyber Torres vs Kris Bubic
  2. 2+0.305 · 3-1 strike called ball
    Javier Báez vs Kris Bubic
  3. 3-0.309 · 3-1 ball called strike· challenged
    Kevin McGonigle vs Lucas Erceg

Run impact from the count run-value table: a missed strike three is worth far more than one on 3-0.

ABS — the Automated Ball-Strike System

4 pitches went to the robots · 3 overturned (ump overruled) · 1 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Kevin McGonigle — ump said strike, robot ruled ball: overturned.
  2. 2Carter Jensen — ump said ball, robot ruled ball: upheld.
  3. 3Michael Massey — ump said strike, robot ruled ball: overturned.
  4. 4Kevin McGonigle — ump said strike, robot ruled ball: overturned.

Our tracked-rulebook zone matched the ABS ruling on 4 of 4 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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